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D. Ulnar nerve; E e e, its continuation branching to the little and ring fingers, &c.
G. Pisiform bone.
H. Abductor muscle of the little finger.
I. Tendon of flexor carpi radialis muscle.
K. Opponens pollicis muscle.
L. Flexor brevis muscle of the little finger.
M. Flexor brevis pollicis muscle.
N. Abductor pollicis muscle.
OOOO. Lumbricales muscles.
P P P P. Tendons of the flexor digitorum sublimis muscle.
Q. Tendon of the flexor longus pollicis muscle.
R. Tendon of extensor metacarpi pollicis.
S. Tendons of extensor digitorum sublimis; P P P, their digital prolongations.
T. Tendon of flexor carpi ulnaris.
U. Union of the digital arteries at the tip of the finger.
[Ill.u.s.tration: Right hand, showing blood vessels, muscles and other internal organs.]
Plate 17
PLATE 18.
A. Radial artery.
B. Tendons of the extensors of the thumb.
C. Tendon of extensor carpi radialis.
D. Annular ligament.
E. Deep palmar arch, formed by radial artery giving off e, the artery of the thumb.
F. Pisiform bone.
G. Ulnar artery, giving off the branch I to join the deep palmar arch E of the radial artery.
H. Ulnar nerve; h, superficial branches given to the fingers. Its deep palmar branch is seen lying on the interosseous muscles, M M.
K. Abductor minimi digiti.
L. Flexor brevis minimi digiti.
M. Palmar interosseal muscles.
N. Tendons of flexor digitorum sublimis and profundus, and the lumbricales muscles cut and turned down.
O. Tendon of flexor pollicis longus.
P. Carpal end of the metacarpal bone of the thumb.
[Ill.u.s.tration: Left hand, showing blood vessels, muscles and other internal organs.]
Plate 18
PLATE 19.
AAA. Tendons of extensor digitorum communis; A*, tendon overlying that of the indicator muscle.
B. Dorsal part of the annular ligament.
C. End of the radial nerve distributed over the back of the hand, to two of the fingers and the thumb.
D. Dorsal branch of the ulnar nerve supplying the back of the hand and the three outer fingers.
E. Radial artery turning round the carpal end of the metacarpal bone of the thumb.
F. Tendon of extensor carpi radialis brevis.
G. Tendon of extensor carpi radialis longus.
H. Tendon of third extensor of the thumb.
I. Tendon of second extensor of the thumb.
K. Tendon of extensor minimi digiti joining a tendon of extensor communis.
[Ill.u.s.tration: Right hand, showing blood vessels, muscles and other internal organs.]
Plate 19
